Description

The 6AV2124-1MC01-0AX0​ is Siemens’ SIMATIC KP1200 Comfort — a 12.1″ widescreen key-operated HMI in the Comfort Panel family, distinguished from its siblings by having no touchscreen at all. It carries 34 programmable function keys with integrated LEDs, a numeric and alphanumeric keypad, 1280×800 TFT at 16.7 M colors, 12 MB configuration memory, Windows CE 6.0, and dual fieldbus: PROFINET (2-port switch) plus MPI/PROFIBUS DP. The 6AV2124-1MC01-0AX0​ is purpose-built for environments where resistive touch fails — oily machine-tool quills, pharma cleanrooms where gloved fingertips can’t register on capacitive/resistive surfaces, or food & beverage washdown doors where the operator needs tactile confirmation without looking. The model entered PM400 phase-out on 31 January 2026, with successor 6AV2128-3MB06-0AX1​ (Unified Comfort 12″ Key) — a migration that adds multitouch even on the “key” SKU, which pure-key buyers need to evaluate.

h2: Application Scenarios

On a high-speed rotary tablet press in a pharma API suite, the original HMI specification called for a TP1200 Comfort (touch) mounted on the operator door. Within six months, the night-shift leads — all double-gloved (nitrile + neoprene) per cleanroom protocol — were consistently missing the “batch confirm” pop-up because the resistive overlay required ~40 g actuation force that the gloved fingertip couldn’t reliably deliver through two layers. Worse, the occasional alcohol-based sanitizer spray on the screen left a conductive residue that caused phantom touches during CIP cycles. The retrofit swapped the TP1200 for a 6AV2124-1MC01-0AX0​ KP1200 in the same 434 × 269 mm cutout. Now the leads press F5 (“confirm batch”) and F12 (“alarm ack”) with tactile click and LED confirmation — no looking, no sanitizer false-trigger. The 6AV2124-1MC01-0AX0​ also exposed a hidden gem: the F-keys are wired as “DP direct keys” to the S7-1500 backplane, so F1–Fx appear as S7 input periphery and the key LEDs as S7 output periphery — the OEM eliminated 18 rungs of ladder that previously mapped HMI internal tags to physical pushbutton I/O. One panel swap, one ladder trim, zero phantom touches since.

h2: Parameter

h2: Technical Principles and Innovative Values

Innovation Point 1: DP Direct Keys/LEDs — F1–Fx as Native S7 Periphery. The 6AV2124-1MC01-0AX0​ allows each of the 34 F-keys to be mapped as “DP direct keys” (S7 input periphery) and each F-key LED as “DP direct LEDs” (S7 output periphery). This means the PLC sees a key-press as if it came from a physical S7 input card, and drives the LED as if it were an S7 output card — no HMI internal tag, no ladder MOV instruction, no WinCC script. For machine-OEM door panels where the HMI is the button panel, this collapses the I/O architecture.

Innovation Point 2: Pure-Key in a 12″ Widescreen Form Factor. Most 12″ HMIs force touch — which fails under oil mist (machine tools), latex-on-neoprene gloves (pharma cleanroom), or high-pressure washdown (F&B). The 6AV2124-1MC01-0AX0​ keeps the 1280×800 widescreen real estate for trend/alarm/batch graphics but delegates all operator action to mechanical keys with ~1M actuation-rated travel. The alpha-numeric keypad (mobile-phone layout) lets operators enter recipe IDs, batch numbers, and passwords without a popup keypad overlaying the process graphic.

Innovation Point 3: Dual-Port PROFINET Switch + MPI/DP in One Cutout. Same as the TP/ KP family: the 6AV2124-1MC01-0AX0​ carries a 2-port PROFINET switch (daisy-chain topology without external switch) and a 9-pin MPI/PROFIBUS DP port. On brownfield retrofits where the S7-300 legacy backbone is DP but the new S7-1500 cell is PROFINET, one KP1200 faces both worlds — the DP port talks to the old master, the PROFINET port to the new rack, and the WinCC project bridges the tags internally.

Innovation Point 4: PM400 Timing & the Unified Migration Caveat. The 6AV2124-1MC01-0AX0​ went PM400 on 31 Jan 2026 — much fresher than the TP1500’s PM410 (2022). The published successor is 6AV2128-3MB06-0AX1​ (Unified Comfort 12″ Key), but Unified “key” SKUs add multitouch even on the key variant — so if your plant spec mandates “key only, no touch,” the migration isn’t drop-in. This is the #1 planning mistake MRO buyers make on this model: assuming -3MB06 is a pure-key replacement when it’s actually key+multitouch.